保存标签与NSUserDefaults的

Question

大家好我有保存按钮的标签的问题，当我点击：

- (IBAction)addButtonSeconds:(id)sender { 


if ([sender tag] == 1) { 
    NSUserDefaults *standardUserDefaults = [NSUserDefaults standardUserDefaults]; 
    [standardUserDefaults setObject:@"Off" forKey:@"time"]; 
    [_editButton setImage:[UIImage imageNamed:@"ВЫКЛ.png"] forState:UIControlStateNormal]; 
    [_plus setEnabled:YES]; 
    [_minus setEnabled:YES]; 
    [_editButton setTag:2]; 
} else if ([sender tag] == 2){ 
    [_editButton setImage:[UIImage imageNamed:@"ВКЛ.png"] forState:UIControlStateNormal]; 
    NSUserDefaults *standardUserDefaults = [NSUserDefaults standardUserDefaults]; 
    [standardUserDefaults setObject:@"ON" forKey:@"time"]; 
    [_plus setEnabled:NO]; 
    [_minus setEnabled:NO]; 
    [_editButton setTag:1]; 
} 

这是初始化方法

if ([[standartDefaults stringForKey:@"time"]isEqualToString:@"ON"]) { 
    self.editButton.tag = 2; 
}else{ 
    self.editButton.tag = 1; 
} 

如果有人可能会说我在哪里我的问题，谢谢。

Answer 1

您看起来像在您的addButtonSeconds:内期望的行为不同于您在初始化过程中的行为。

在初始化：

self.editButton.tag == 2; // when "time" is "ON" 
self.editButton.tag == 1; // when "time" is not "ON" 

在addButtonSeconds:：

self.editButton.tag == 1; // when "time" is "ON" 
self.editButton.tag == 2; // when "time" is not "ON" 

不过，我不知道是你写的逻辑是有道理，还是必须使用的tag财产。考虑继承UIButton，或者直接使用现有的setSelected:和isSelected的UIButton。

编辑：我会根据您的意见修正您的代码。

- (IBAction)addButtonSeconds:(id)sender { 
    [_editButton setSelected:![_editButton isSelected]]; 
    [_plus setEnabled:![_editButton isSelected]]; 
    [_minus setEnabled:![_editButton isSelected]]; 
    NSUserDefaults *standardUserDefaults = [NSUserDefaults standardUserDefaults]; 
    [standardUserDefaults setObject:@([_editButton isSelected]) forKey:@"editSelected"]; 
} 

在初始化：

[_editButton setImage:[UIImage imageNamed:@"ВЫКЛ.png"] forState:UIControlStateNormal]; 
[_editButton setImage:[UIImage imageNamed:@"ВКЛ.png"] forState:UIControlStateSelected]; 
[_editButton setImage:[UIImage imageNamed:@"ВКЛ.png"] forState:UIControlStateSelected|UIControlStateHighlighted]; 
[_editButton setSelected:[[standartDefaults stringForKey:@"editSelected"] boolValue]];